In the present study, we conducted four idealized hurricane large-eddy simulation cases to investigate the size characteristics of the different radius of maximum wind (RMW) of hurricanes at different intensity levels. The RMW shows different characteristics for different grid resolutions and hurricane intensities, which shows a similar trend to absolute angular momentum. Thus, the absolute angular momentum consideration was proposed to explain the radial distribution of RMW in different hurricane intensity cases. This physical mechanism is that diabatic heating induces the enhancement boundary layer inflow in spiral rainbands. Then the considerable absolute angular momentum would be brought into the hurricane eyewall region with the strong radial inflow induced by this diabatic heating, increasing the tangential wind outside the eyewall, and thus leading to an outward expansion of the tangential velocity wind field, and finally, the RMW size increases.

在本研究中，我们通过四个理想化的飓风大涡模拟案例来研究不同强度级别的飓风最大风速（RMW）的不同半径的尺寸特征。RMW在不同的网格分辨率和飓风强度下表现出不同的特征，与绝对角动量呈现出相似的趋势。因此，提出了绝对角动量考虑来解释RMW在不同飓风强度情况下的径向分布。这种物理机制是非绝热加热引起螺旋雨带中增强的边界层流入。然后将相当大的绝对角动量带入飓风眼墙区域，这种非绝热加热引起强烈的径向流入，增加了眼墙外的切向风，